What is unapplied cash in accounts receivable?

It is a customer payment the business has banked but not yet allocated to the invoices it settles. It usually arises when a payment arrives without a remittance advice, covers several invoices at once, or is short-paid without explanation. Until it is applied, the invoices it settles still show as open on the aged debtors report, so the report overstates what customers owe, or misstates how old the debts are, depending on where the receipt has been posted.

Where does unapplied cash appear in the accounts?

The cash itself is in the bank. The other side of the entry is usually either an unallocated credit on the customer's account, which keeps the customer's total right but leaves its invoices looking unpaid, or a suspense or unidentified-receipts account, which leaves the debtors total overstated until the receipt is identified. In the year-end accounts, a receipt known to come from customers is usually shown as reducing trade receivables, but the aged report a lender relies on may still show the invoices.

Why do lenders deduct unapplied cash from the borrowing base?

Because the invoices it has paid will not be paid again. If the receipt has already gone into the financier's collection account, it has reduced the amount drawn; counting the same invoices as eligible would let the business borrow against them a second time. Deducting unapplied cash until it is matched keeps the base to debts that are still owed, and the size and age of the deduction tell the lender how well the ledger is kept.

How can misallocating payments hide overdue invoices?

By applying a customer's payment to an older, overdue or disputed invoice instead of the newer one it was meant for. The overdue invoice disappears from the oldest age band, while the invoice the customer actually paid stays open in a current band and looks eligible. The total owed is unchanged, but the ledger now shows a younger, healthier book than the real one. Field audits look for it by matching receipts to customers' own remittance advices.

// WORKED EXAMPLETHE ARITHMETIC A DECISION RESTS ON

Unapplied Cash: a Worked Example

Paid is paid, even when the ledger has not caught up.

BY MICHAEL SHANG · SIXTEEN YEARS IN COMMERCIAL BANKING · UPDATED 2026-11-07

// THE SHORT ANSWER

For a financier lending against invoices, unapplied cash is the gap between what the ledger says customers owe and what they have already paid. Until a receipt is matched to the invoices it settles, those invoices keep appearing as open and can keep supporting an advance, even though the cash has arrived and may already have reduced the facility. Financiers therefore take unmatched receipts off the eligible ledger, watch how long they stay unmatched, and read a balance that grows or ages as a sign that the ledger behind the certificate is not being kept, or is being kept selectively.

BASIS Practitioner judgment from sixteen years in commercial banking, set out in How Bankers Think (Highbank Press, 2026). Every borrower on this site is a composite constructed for teaching, not a client. The market is mid-market commercial lending as practised in New Zealand and Australia; where a convention differs elsewhere, the page says so.

// MAKE THE CALL

Issue 02 — Aoraki Trade Exports. Paid in USD, costs in NZD, asking for a NZ$6m multi-currency facility. The MD won't say which currencies. Your call first, then the senior banker's.

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// 01 — WHY A LEDGER CAN SHOW DEBTS ALREADY PAID

Customers often pay without saying what they are paying for. A large customer pays a round sum against a month of invoices with no remittance advice, pays several invoices in one transfer with a reference the system cannot read, or deducts a disputed amount without saying which invoice it has cut. Until someone in accounts works out which invoices the money settles, it sits unapplied.

Where it sits changes what the ledger shows. If the receipt is posted to the customer's account as an unallocated credit, the customer's total balance is right but every invoice on it still looks open, and the age bands are wrong: an invoice the customer has paid can sit in the 90-day column. If the receipt is parked in a suspense account until it is identified, the ledger total itself is overstated. Either way, a borrowing base built invoice by invoice from the aged debtors report counts invoices that have been paid.

// 02 — HOW A FINANCIER TREATS IT

Eligible debtors = ledger − ineligible items − unapplied cash

Availability = eligible debtors × advance rate − reserves

Headroom = availability − amount drawn

Many facility agreements list unapplied cash among the deductions on the borrowing base certificate, and some set a period after which unmatched receipts must be applied or reported. Where the receipt cannot be tied to particular invoices, a financier will often assume it paid eligible ones, since that is the reading that does not overstate the base. Under disclosed factoring the financier often runs the sales ledger and applies the cash itself. Under confidential invoice discounting the business does, which is where unapplied cash builds up unseen.

// 03 — THE EXAMPLE

A labour-hire business, constructed for this page like every figure in it, has a confidential invoice discounting facility advancing 80% of eligible debtors. At month end its aged debtors report shows US$3.4m of open invoices, of which US$0.5m is ineligible, and it has drawn US$2.2m. In the last week of the month two large customers paid US$260,000 into the collection account without remittance advices. The receipts reduced the drawn balance, but have been parked in suspense, and the invoices they paid, all current, still show as open. The advance rate and the balances belong to the example. In US$ thousands:

As certified: (3,400 − 500) × 80% = 2,900 × 80% = 2,320

headroom: 2,320 − 2,200 = 120

Corrected: (3,400 − 500 − 260) × 80% = 2,640 × 80% = 2,112

headroom: 2,112 − 2,200 = − 88

The business that reported US$120,000 of headroom is US$88,000 over its limit. The US$260,000 has been counted twice: once as cash that reduced the facility, and again as invoices that support it. Nothing dishonest need have happened; the remittances were simply late. The financier's question is how often it happens and how long the receipts take to clear.

The same ledger can show the other kind of problem. Suppose one customer disputes a US$70,000 invoice from January, then pays its US$70,000 March invoice in full. If the receipt is applied to January instead, the disputed invoice disappears from the over-90 column and the paid March invoice stays open and within terms. The ledger total is unchanged, but US$70,000 of eligible debt is now a disputed one in disguise, supporting a further US$56,000 of advance (70 × 80%), and the customer may no longer trip a cross-ageing rule it would otherwise have met.

// 04 — HOW IT DIFFERS FROM A CREDIT BALANCE

Unapplied cash is a receipt waiting to be matched; once matched, it disappears. A credit balance is money the business owes a customer: an overpayment, a credit note issued and not yet used, a rebate earned. Both reduce what the ledger is worth, but they are cleared differently, the first by allocation and the second by refund or set-off against future invoices. A credit balance sitting against an old account can also mask an overdue invoice in the same way a misallocated receipt does.

It also differs from dilution, which reduces what customers will pay. Unapplied cash reduces nothing: the money has arrived. The risk is only in the counting, which is why it is treated as a reporting question first and a credit question second.

DEFINED IN ONE PARAGRAPH → · ELIGIBLE RECEIVABLES → · PRODUCT FILE · INVOICE FINANCE →

// 05 — WHERE IT DECIDES A FILE

It decides each certificate, through the deduction, and it decides the field audit, where the financier traces a sample of receipts from the bank statement to the invoices they were applied to. A receipt applied to an older invoice than the customer's remittance names is the pattern the audit looks for. It also decides the reading of the trend: a balance of unapplied cash that is small and clears within days is housekeeping; one that grows each month, or ages, suggests a finance team that cannot keep up or a ledger kept to flatter the certificate.

Either reading changes the facility. The first leads to a reporting covenant and a tighter deduction. The second leads to more frequent audits, a lower advance rate, or a move from a confidential facility to one where the financier collects and applies the cash itself.

BORROWING BASE CERTIFICATE → · WHAT TO SEND YOUR BANK EACH MONTH →

// QUESTIONS PEOPLE ASK

What is unapplied cash in accounts receivable?: It is a customer payment the business has banked but not yet allocated to the invoices it settles. It usually arises when a payment arrives without a remittance advice, covers several invoices at once, or is short-paid without explanation. Until it is applied, the invoices it settles still show as open on the aged debtors report, so the report overstates what customers owe, or misstates how old the debts are, depending on where the receipt has been posted.
Where does unapplied cash appear in the accounts?: The cash itself is in the bank. The other side of the entry is usually either an unallocated credit on the customer's account, which keeps the customer's total right but leaves its invoices looking unpaid, or a suspense or unidentified-receipts account, which leaves the debtors total overstated until the receipt is identified. In the year-end accounts, a receipt known to come from customers is usually shown as reducing trade receivables, but the aged report a lender relies on may still show the invoices.
Why do lenders deduct unapplied cash from the borrowing base?: Because the invoices it has paid will not be paid again. If the receipt has already gone into the financier's collection account, it has reduced the amount drawn; counting the same invoices as eligible would let the business borrow against them a second time. Deducting unapplied cash until it is matched keeps the base to debts that are still owed, and the size and age of the deduction tell the lender how well the ledger is kept.
How can misallocating payments hide overdue invoices?: By applying a customer's payment to an older, overdue or disputed invoice instead of the newer one it was meant for. The overdue invoice disappears from the oldest age band, while the invoice the customer actually paid stays open in a current band and looks eligible. The total owed is unchanged, but the ledger now shows a younger, healthier book than the real one. Field audits look for it by matching receipts to customers' own remittance advices.

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